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[manolo]

what to check?
I have vibration from differential when starting (1 and 2 speed) and turning left or right in curve

[Brikhead]

Have you checked the oil level?

[manolo]

yes. it is OK

[Omegatoy]

donut bushes?
prop rubbers? especially centre bearing
dmf ? if manual
all can cause this problem

[manolo]

I went mehanicar and he says to change some rubbers
Can I buy on Ebay, wich GM number to search?
Here is picture


Uploaded with ImageShack.us

[ffcgary1]

At the front of the propshaft there is a large rubber coupling on the front universal joint, these become soft with age and can cause driveline vibration, check it by gripping the prop at the front and try to see if there is exessive movement, if yes then change it.
It could be the centre rubber vibration damper but i would go with the front first.

[manolo]

is it on picture marked with red arrow?

found on Ebay
http://www.ebay.co.uk/itm/VAUXHALL-OMEGA-PROPSHAFT-GEARBOX-PROPSHAFT-JOINT-90-578-558-/230854088663?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item35bff9d7d7
is this that rubber?
My car is omega 2.6v6 2002.y.

[ffcgary1]

YEP,
but the one one ebay you linked to is used and therefor unknown quality, also it does not list its model fitment as to what what engine size. they might be all the same but you will have to check that with your local dealer. if you fit a used part you might end up doing the job twice.
Some parts you need to buy new. More informed on here will be able to help you as to poss variations in part no and fitment.

[manolo]

I can't find GM number for my Omega 2.6v6
on ebay and local store there is only for 2.5v6 with no. GM 90578558 and swag 40860002 (50x127-131x30)
does it fit to my Omega?

[ffcgary1]

Take that part No to your local dealer and ask if they are the same across the range.

[manolo]

rubber is OK but some disk is not 
can I change only this disk? if there is a GM no.?

[ffcgary1]

What disc are you refering to, need more information and discription pls.

[manolo]

I found
it is PROPSHAFT BALANCE WEIGHT GM 90522611
http://www.ebay.com.sg/itm/VAUXHALL-OPEL-OMEGA-V6-PROPSHAFT-BALANCE-WEIGHT-GM-90522611-612-/310379449979?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item48440e8e7b


is it possibly to repair, what can go wrong with it?

[manolo]

I found
it is PROPSHAFT BALANCE WEIGHT GM 90522611
http://www.ebay.com.sg/itm/VAUXHALL-OPEL-OMEGA-V6-PROPSHAFT-BALANCE-WEIGHT-GM-90522611-612-/310379449979?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item48440e8e7b


is it possibly to repair, what can go wrong with it?

is it possible to drive without balance?
preice for new is about 600 Euro and can't find replacement

[ffcgary1]

What makes you think yours is faulty mate, is yours damaged in anyway ? as far as i can see there is nothing to go wrong with the balance weight, have you checked the prop shaft to see if the small balance wieght is still attatched to the propshaft. It is a curved piece of metal stuck to the prop half way along its length, if that is missing it could give you the symptoms that you describe.